Elegant exposition of the postulation geometry of planes, including coordination of affine and projective planes. Historical background, set theory, prop- ositional calculus, affine planes with Desargues and Pappus properties, construction of metrical planes, much more. Rigorous, lucid treatment of important area in modern mathematics. Unabridged, corrected republication of the third (1961) edition. 56 figures.

Elegant exposition of the postulation geometry of planes, including coordination of affine and projective planes. Historical background, set theory, prop- ositional calculus, affine planes with Desargues and Pappus properties, construction of metrical planes, much more. Rigorous, lucid treatment of important area in modern mathematics. Unabridged, corrected republication of the third (1961) edition. 56 figures.